JVC XV-N30BK(MK3) User manual

SERVICE MANUAL
COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LIMITED No.XA014
2003/10
DVD VIDEO PLAYER
XA014200310 XV-N30BK(MK3), XV-N33SL(MK3),
XV-N35SL(MK3), XV-N3SL(MK3)
TABLE OF CONTENTS
1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
2 SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17
5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23
213
5
8
4
7
6
9
010 +10
DISPLAY
3D PHONIC
ANGLE
TOP MENU MENU
CHOICE
PREVIOUS SELECT
CLEAR
NEXT
VFP ON SCREEN
ENTER
SUB TITLE AUDIO ZOOM
TITLE/
GROUP RETURN CANCEL
STANDBY/ON
SLOW
Area Suffix
(XV-N30BK,XV-N33SL)
J -------------------------- U.S.A.
C --------------------- Canada
B -------------------------- U.K.
E ------ Continental Europe
EN ------- Northern Europe
EV --------- Eastern Europe
EE ---- Russian Federation
Area Suffix (XV-N35SL)
B -------------------------- U.K.
E ------ Continental Europe
EN ------- Northern Europe
EV --------- Eastern Europe
EE ---- Russian Federation
Area Suffix (XV-N3SL)
J -------------------------- U.S.A.
This illustration is XV-N30BK for U.S.A.
For only Europe
This service manual is a service manual of the model which
changes a part of specification of the above-mentioned model
which has already been put on the market.
Please refer to the following page for details.

1-2 (No.XA014)
For this service manual
This service manual is a service manual of the model which changes a part of specification of the above-mentioned model
which has already been put on the market.
<When the label in figure is pasted in the main body>
The specification is different from what the label of the same model does not paste because of the specification improvement,
and refer to this service manual, please. Please already refer to the issued service manual when the label is not pasted.
Used only service dealer
Please refer to service manual of an applicable model MK3
GN30080-002A
* Please refer to this service manual for the model to which this label is pasted.
* Please refer to the service manual which has already been issued for the
model to which this label is not pasted.
(one that there is no description named [MK3] in cover of service manual. )
The already published service manual
ISSUE No.A0039 2003/3 XV-N30BK, XV-N33SL
ISSUE No.XA002 2003/5 XV-N30BK(MK2), XV-N33SL(MK2)
ISSUE No.XA005 2003/5 XV-N35SL, XV-N35SL(MK2)
ISSUE No.XA012 2003/7 XV-N3SL

(No.XA014)1-3
SPECIFICATION
(For U.S.A.)
• Specifications and appearance are subject to change without prior notice.
• Manufactured under license from Dolby Laboratories. "Dolby" and the double-D symbol are trademarkes of Dolby Laboratories.
• Manufactured under license from Digital Theater Systems, Inc. "DTS" and "DTS Digital Surround" are registered trademarks of Dig-
ital Theater Systems, Inc.
General
Readable discs DVD VIDEO, DVD-R (Video format), DVD-RW (Video format), +RW (Video format), SVCD, Video CD,
Audio CD (CD-DA), MP3 format, CD-R/RW (CD-DA, SVCD, Video CD, MP3 format)
Video format NTSC
Other
Power requirements AC 120 V, 60 Hz
Power consumption 10 W (POWER ON) 0.7 W (STANDBY mode)
Mass 2.1 kg (4.7 lbs)
Dimensions (W ×H ×D) 435mm ×53mm ×248.4mm (17-3/16 inch ×2-1/8 inc ×9-13/16 inch)
Video outputs
COMPONENT (pin jacks) Y Output: 1.0 Vp-p (75 Ω)
Pb/Pr Output: 0.7Vp-p (75 Ω)
VIDEO OUT (pin jack) 1.0 Vp-p (75 Ω)
S-VIDEO OUT (S jack) Y Output: 1.0 Vp-p (75 Ω)
C Output: 286 mVp-p (75 Ω)
Horizontal resolution 500 lines or more
Audio outputs
ANALOG OUT (pin jack) 2.0 Vrms (10 kΩ)
DIGITAL OUT (COAXIAL) 0.5 Vp-p (75 Ωtermination)
DIGITAL OUT (OPTICAL) -21 dBm to -15 dBm (peak)
Audio characteristics
Frequency response CD (sampling frequency 44.1 kHz):2 Hz to 20 kHz
DVD (sampling frequency 48 kHz):2 Hz to 22 kHz
(4 Hz to 20 kHz for DTS and Dolby Digital bitstream signals)
DVD (sampling frequency 96 kHz):2 Hz to 44 kHz
Dynamic range 16 bit: More than 98 dB
20 bit: More than 100 dB
24 bit: More than 100 dB
Wow and flutter Unmeasurable (less than + 0.002%)
Total harmonic distortion less than 0.006%

1-4 (No.XA014)
SECTION 1
PRECAUTION
1.1 Safety Precautions
(1) This design of this product contains special hardware and
many circuits and components specially for safety purpos-
es. For continued protection, no changes should be made
to the original design unless authorized in writing by the
manufacturer. Replacement parts must be identical to
those used in the original circuits. Services should be per-
formed by qualified personnel only.
(2) Alterations of the design or circuitry of the product should
not be made. Any design alterations of the product should
not be made. Any design alterations or additions will void
the manufacturers warranty and will further relieve the
manufacture of responsibility for personal injury or property
damage resulting therefrom.
(3) Many electrical and mechanical parts in the products have
special safety-related characteristics. These characteris-
tics are often not evident from visual inspection nor can the
protection afforded by them necessarily be obtained by us-
ing replacement components rated for higher voltage, watt-
age, etc. Replacement parts which have these special
safety characteristics are identified in the Parts List of Ser-
vice Manual. Electrical components having such features
are identified by shading on the schematics and by ( ) on
the Parts List in the Service Manual. The use of a substitute
replacement which does not have the same safety charac-
teristics as the recommended replacement parts shown in
the Parts List of Service Manual may create shock, fire, or
other hazards.
(4) The leads in the products are routed and dressed with ties,
clamps, tubings, barriers and the like to be separated from
live parts, high temperature parts, moving parts and/or
sharp edges for the prevention of electric shock and fire
hazard. When service is required, the original lead routing
and dress should be observed, and it should be confirmed
that they have been returned to normal, after reassem-
bling.
(5) Leakage shock hazard testing)
After reassembling the product, always perform an isola-
tion check on the exposed metal parts of the product (an-
tenna terminals, knobs, metal cabinet, screw heads,
headphone jack, control shafts, etc.) to be sure the product
is safe to operate without danger of electrical shock.Do not
use a line isolation transformer during this check.
• Plug the AC line cord directly into the AC outlet. Using a
"Leakage Current Tester", measure the leakage current
from each exposed metal parts of the cabinet, particular-
ly any exposed metal part having a return path to the
chassis, to a known good earth ground. Any leakage cur-
rent must not exceed 0.5mA AC (r.m.s.).
• Alternate check method
Plug the AC line cord directly into the AC outlet. Use an
AC voltmeter having, 1,000 ohms per volt or more sensi-
tivity in the following manner. Connect a 1,500 ohm 10W
resistor paralleled by a 0.15 F AC-type capacitor be-
tween an exposed metal part and a known good earth
ground.
Measure the AC voltage across the resistor with the AC
voltmeter.
Move the resistor connection to each exposed metal
part, particularly any exposed metal part having a return
path to the chassis, and measure the AC voltage across
the resistor. Now, reverse the plug in the AC outlet and
repeat each measurement. Voltage measured any must
not exceed 0.75 V AC (r.m.s.). This corresponds to 0.5
mA AC (r.m.s.).
1.2 Warning
(1) This equipment has been designed and manufactured to
meet international safety standards.
(2) It is the legal responsibility of the repairer to ensure that
these safety standards are maintained.
(3) Repairs must be made in accordance with the relevant
safety standards.
(4) It is essential that safety critical components are replaced
by approved parts.
(5) If mains voltage selector is provided, check setting for local
voltage.
1.3 Caution
Burrs formed during molding may be left over on some parts
of the chassis.
Therefore, pay attention to such burrs in the case of pre-
forming repair of this system.
1.4 Critical parts for safety
In regard with component parts appearing on the silk-screen
printed side (parts side) of the PWB diagrams, the parts that are
printed over with black such as the resistor ( ), diode ( )
and ICP ( ) or identified by the " " mark nearby are critical for
safety. When replacing them, be sure to use the parts of the
same type and rating as specified by the manufacturer. (Except
the JC version)

(No.XA014)1-5
1.5 Preventing static electricity
Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged, can destroy the laser
diode in the traverse unit (optical pickup). Take care to prevent this when performing repairs.
1.5.1 Grounding to prevent damage by static electricity
Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as DVD players.
Be careful to use proper grounding in the area where repairs are being performed.
(1) Ground the workbench
Ground the workbench by laying conductive material (such as a conductive sheet) or an iron plate over it before placing the
traverse unit (optical pickup) on it.
(2) Ground yourself
Use an anti-static wrist strap to release any static electricity built up in your body.
(3) Handling the optical pickup
• In order to maintain quality during transport and before installation, both sides of the laser diode on the replacement optical
pickup are shorted. After replacement, return the shorted parts to their original condition.
(Refer to the text.)
• Do not use a tester to check the condition of the laser diode in the optical pickup. The tester's internal power source can easily
destroy the laser diode.
1.6 Handling the traverse unit (optical pickup)
(1) Do not subject the traverse unit (optical pickup) to strong shocks, as it is a sensitive, complex unit.
(2) Cut off the shorted part of the flexible cable using nippers, etc. after replacing the optical pickup. For specific details, refer to the
replacement procedure in the text. Remove the anti-static pin when replacing the traverse unit. Be careful not to take too long
a time when attaching it to the connector.
(3) Handle the flexible cable carefully as it may break when subjected to strong force.
(4) I t is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it.
1.7 Precautions of the safe use of battery (Only ver. J, C)
• Store the battery in a place where children cannot reach.If a child accidentally swallows the battery, consult a doctorimmediately.
• Do not recharge, short, disassemble or heat the battery or dispose of it in a fire.
Doing any of these things may cause the battery to give off heat, crack, or start a fire.
• Do not leave the battery with other metallic materials.Doing this may cause the battery to give off heat, crack, or start a fire.
• When throwing away or saving the battery, wrap it in tape and insulate; otherwise, the battery may start to give off heat, crack, or
start a fire.
• Do not poke the battery with tweezers or similar tools.Doing this may cause the battery to give off heat, crack, or start a fire.
• Dispose of batteries in the proper manner, according to federal, state, and local regulations.

1-6 (No.XA014)
1.8 Importance admistering point on the safety
C701
C706
C902
C904
C905
C907
C908
C913
C914
C918
C950
C951
C953
C955
C957
B34
C959
B139
C965 C966
C967
B15
C973
C974
C975
B276
C977
B772
C988
B4
D901
CP951
D701
D953
CN901
D904
B873
B166
EP951
FC901 FC902
IC901
IC952
J702
L709
L710
L901
L951
L952
L954
B116
L955
B532
C976
P704
P901
PC901
Q953
B45
R901
R903
R906
R910
R912
R913
R953
R954
S901
T901
X701
S902
C952
B234
C970 B236
D956
B137
L956
L957
L959
B333
B533
B771
B32
B852
B874
B872
B871
B140
B272
B332
B601
B141
B16
B331
B136
B403
B271
B38
B39
B36
B142
B143
B40
B133
B134
B132
B202
B231
B233
B105
B41
B201
B103
B101
B171
B44
D955
B303
B135
CN902
B273
B631
B37
L953
R966
R951
R915
B2
B237
Q951
B203
B102
C958
D957 D954 D952
D951
D903
D902
B347
EP952
C963
C964
EP953
B17
R969
C906
,, B138
C808 C802
CN904
B170
D702
Full Fuse Replacement Marking
Graphic symbol mark
(This symbol means fast blow type fuse.)
should be read as follows ;
FUSE CAUTION
FOR CONTINUED PROTECTION AGAINST RISK
OF FIRE, REPLACE ONLY WITH SAME TYPE
AND RATING OF FUSES ;
F901 : 1.6 A / 125 V F901 : 1.6 A / 125 V
Marquage Pour Le Remplacement
Complet De Fusible
PRECAUTIONS SUR LES FUSIBLES
POUR UNE PROTECTION CONTINUE CONTRE
DES RISQUES D'INCENDIE, REMPLACER
SEULEMENT PAR UN FUSIBLE DU MEME TYPE ;
Le symbole graphique (Ce symbole signifie
fusible de type a fusion rapide.)
doit etre interprete comme suit ;

(No.XA014)1-7
1.9 Important for laser products
(1) CLASS 1 LASER PRODUCT
(2) DANGER : Invisible laser radiation when open and inter
lock failed or defeated. Avoid direct exposure to beam.
(3) CAUTION : There are no serviceable parts inside the
Laser Unit. Do not disassemble the Laser Unit. Replace the
complete Laser Unit if it malfunctions.
(4) CAUTION : The compact disc player uses invisible laser
radiation and is equipped with safety switches which
prevent emission of radiation when the drawer is open and
the safety interlocks have failed or are de feated.
It is dangerous to defeat the safety switches.
(5) CAUTION : If safety switches malfunction, the laser is able
to function.
(6) CAUTION : Use of controls, adjustments or performance of
procedures other than those specified herein may result in
hazardous radiation exposure.
CAUTION
Please use enough caution not to see the beam directly
or touch it in case of anadjustment or operation check.
VARNING
Osynlig laserstrålning är denna del är öppnad och spårren är
urkopplad. Betrakta ej strålen.
VARO
Avattaessa ja suojalukitus ohitettaessa olet alttiina näkymät-
tömälle lasersäteilylle. Älä katso säteeseen.
ADVARSEL
Usynlig laserstråling ved åbning, når sikkerhedsafbrydere er
ude af funktion. Undgå udsasttelse for stråling.
ADVARSEL
Usynlig laserstråling ved åpning, når sikkerhetsbryteren er avs-
lott. unngå utsettelse for stråling.
REPRODUCTION AND POSITION OF LABEL and PRINT
WARNING LABEL and PRINT
RIGHT LEFT COAXIAL
VIDEO
S-VIDEO
PCM/STREAM
VIDEO OUT AV OUT
AUDIO OUT DIGITAL OUT
AV COMPU LINK
COMP.
/RGB Y/C
VIDEO SIGNAL
SELECTOR
The inside of a rear panel

1-8 (No.XA014)
1.10 Precautions for Service
1.10.1 Handling of Traverse Unit and Laser Pickup
(1) Do not touch any peripheral element of the pickup or the actuator.
(2) The traverse unit and the pickup are precision devices and therefore must not be subjected to strong shock.
(3) Do not use a tester to examine the laser diode. (The diode can easily be destroyed by the internal power supply of the tester.)
(4) To replace the traverse unit, pull out the metal short pin for protection from charging.
(5) When replacing the pickup, after mounting a new pickup, remove the solder on the short land which is provided at the center of
the flexible wire to open the circuit.
(6) Half-fixed resistors for laser power adjustment are adjusted in pairs at shipment to match the characteristics of the optical block.
Do not change the setting of these half-fixed resistors for laser power adjustment.
1.10.2 Destruction of Traverse Unit and Laser Pickup by Static Electricity
Laser diodes are easily destroyed by static electricity charged on clothingor the human body. Before repairing peripheral elements of
the traverse unit or pickup, be sure to take the following electrostatic protection:
(1) Wear an antistatic wrist wrap.
(2) With a conductive sheet or a steel plate on the workbench on which the traverse unit or the pick up is to be repaired, ground the
sheet or the plate.
(3) It solders to two short circuit sections on the substrate of a pick-up.
(4) After removing the flexible wire from the connector (CN101), short-circuit the flexible wire by the metal clip.
(5) Short-circuit the laser diode by soldering the land which is provided at the center of the flexible wire for the pickup.
After completing the repair, remove the solder to open the circuit.
CN101
Servo control board
Pick-up
Short circuit
* Please refer to the disassembly method for details.

(No.XA014)1-9
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.

1-10 (No.XA014)
SECTION 3
DISASSEMBLY
There is a part different from the photograph according to the model and the destination though explains this disassembly method
by using XV-N30BK for U.S.A.
3.1 Main body section
3.1.1 Removing the top cover (See Figure 1)
(1) Remove the two screws Aattaching the top cover on both
sides of the main body.
(2) Remove the three screws Battaching the top cover on the
back of the main body.
(3) Raise the both sides and lower part of the rear of the top
cover, with opening them slightly in an outward direction.
And the top cover will be removed.
Fig.1
3.1.2 Removing the front panel assembly (See Figure 2, Figure 3, Figure 4)
• Prior to performing the following procedure, remove the top
cover.
• There is no need to remove the mechanism assembly.
(1) Insert a kind of screwdriver in a hole located in the right
side of mechanism assembly, and push a lever until it can-
not be inserted any further.
(2) And then, a tray will come out. Remove the tray in an upper
direction, with slightly opening the lower part of fitting in an
outward direction.
(3) Disconnect the card wire from connector CN901 on the
power supply board.
(4) Hook aand bare removed respectively, and the front panel
assembly is removed.
Fig.2
Fig.3
Fig.4
B
B
B
Ax 2
TOP COVER
TOP COVER
TOP COVER
Front panel assembly
Mechanism assembly
Tray
Fitting
Hole and lever
Push
Push
CN901
Front panel assembly
Power supply board
Hook a
Hook a
Hook b
Hook b
Front panel
assembly

(No.XA014)1-11
3.1.3 Removing the mechanism assembly (See Figure 2, Figure 5)
• Prior to performing the following procedure, remove the top
cover.
• There is no need to remove the front panel assembly.
(1) Insert a kind of screwdriver in a hole located in the right
side of mechanism assembly, and push a lever until it can-
not be inserted any further.
(2) And then, a tray will come out. Remove the tray in an upper
direction, with slightly opening the lower part of fitting in an
outward direction.
(3) Remove the three screws Cattaching the mechanism as-
sembly. At this time, a shield plate also separates simulta-
neously.
(4) Disconnect the card wire from connector CN702 on the
output terminal board.
(5) Disconnect the wire from connector CN501, CN502,
CN503 on the servo control board respectively.
(6) Remove the mechanism assembly by lifting the rear part of
the mechanism assembly.
Fig.5
3.1.4 Removing the servo control board (See Figure 6, Figure 7)
• Prior to performing the following procedure, remove the mech-
anism assembly.
(1) A tray is made to slide ahead.
(2) A gear 1 is turned counterclockwise. Then, a pick-up unit
moves back.
(3) It solders to two c sections on the pick-up unit.
(4) Remove the three screws Dattaching the servo control
board.
(5) Disconnect the card wire from connector CN201, CN202
on the servo control board.
(6) Disconnect the flexible wire from connector CN101 on the
servo control board from pick-up unit.
ATTENTION:
Please extract the wire after short-circuited of two places
on the wire in part cwith solder. Please remove the sol-
der two places of part cafter connecting the wire with
CN101 when reassembling.
CAUTION:
Be sure to solder the short land sections “c” on the pick-
up unit before disconnecting the card wire from connec-
tor CN101 on the DVD servo control board.
If the card wire is disconnected without attaching solder,
the pick-up unit may be destroyed by static electricity.
Fig.6
Fig.7
C
Mechanism assembly
CN501
Output terminal board Shield plate
C
C
CN502
CN702
CN503
Gear1
Pick-up
Part c
CN201
D
CN202
CN101
Servo control board
D
D

1-12 (No.XA014)
3.1.5 Removing the rear panel (See Figure 8, Figure 9)
• Prior to performing the following procedure, remove the top
cover.
(1) Remove the five screws Eattaching the rear panel.
(2) Disconnect the power cord from connector P901 on the
power supply board
(3) Remove tie band.
Fig.8
Fig.9
3.1.6 Removing the output terminal board and power supply board. (See Figure 9)
• Prior to performing the following procedure, remove the top
cover/mechanism assembly/rear panel.
(1) Remove the two screws Gattaching the output terminal
board.
(2) Remove the three screws Hattaching the power supply
board.
(3) Disconnect the card wire from connector CN901 on the
power supply board.
E
Rear panel
E
CN901 P901
H
Tie band
Power cord
H
Power supply board
Output terminal board
GG
H

(No.XA014)1-13
3.2 Loading mechanism assembly
3.2.1 Removing the tray (See Figure 1, Figure 2, Figure 3, Figure 4, Figure 5, Figure 6)
(1) Push aof the slide cam on the hole in the right side of the
loading base by using a driver until it stops. (See Figure 1.)
(2) The tray comes out. Pull the tray in a front direction until it
stops.
(3) Remove the two screws Aattaching the slide bracket. (See
Figure 2.)
(4) Tilt the tray in a direction of the arrow around the point in
the left rear part of the tray. (See Figure 3.)
(5) The rail of the tray is removed from bof the loading base.
Then, remove the tray upward. (See Figure 4.)
Attaching the tray:
Engage cof the loading base to the projection of the tray while
tilting the tray to the left. Turn the tray in a direction of the ar-
row, and attach the slide bracket. (See Figure 5.)
Note:
Prior to the procedure above, move the slide cam in a direction
of the arrow so that dof the slide cam can be inserted in eof
the tray. (See Figure 6.)
Fig.1
Fig.2
Fig.3
Fig.4
Fig.5
Fig.6
Tray
Push
Loading base
Slide cam part a
Tray
AA
Slide bracket
Tray
The point in the left rear part
Loading base part bRail of the tray
Projection of the tray
Projection of the tray
Loading base part c
Slide cam
Part d
Part e

1-14 (No.XA014)
3.2.2 Removing the traverse mechanism assembly (See Figure 7)
Reverse the loading mechanism assembly. Remove the four
screws Battaching the traverse mechanism assembly. Remove
the traverse mechanism assembly upward.
Fig.7
3.2.3 Removing the elevator (See Figure 8 and Figure 9)
• Prior to the following procedure, remove the traverse mecha-
nism assembly.
(1) Remove the two arms of the elevator from the two parts f
by moving the arms in a direction of the arrow.
(2) Pull out the elevator in a rear direction.
Attaching the elevator:
Engage the two holes gto the two shafts on the front part of
the elevator. And then, attach the elevator.
Fig.8
Fig.9
Loading mechanism assembly
B
B
B
B
Traverse mechanism assembly
Part fPart
f
Elevator
Slide cam g
g
Shaft
Shaft
Elevator

(No.XA014)1-15
3.2.4 Removing the loading motor (See Figure 10 and Figure 11)
• Prior to the following procedure, remove the tray, the traverse
mechanism assembly, and the elevator.
(1) Remove the belt from the pulley.
(2) Remove two screws Cattaching the loading motor.
(3) Remove two solders hon the switch board.
Fig.10
Fig.11
Loading base
Slide cam
Belt
C
C
Pulley Pulley
Loading motor
Switch board Part h

1-16 (No.XA014)
3.3 Traverse mechanism assembly
3.3.1 Removing the pickup (See Figure 12, Figure 13)
• Prior to the following procedure, remove the traverse mecha-
nism assembly.
(1) Remove one screw Dattaching the plate.
(2) Remove the plate and the leaf spring.
(3) Lift iof the shaft 1, and pull out the shaft 1from j.
(4) Remove kof the pickup from the shaft 2.
Attaching the pickup:
(1) Engage kof the pickup to the shaft 2.
(2) Insert the shaft 1in j, and attach the shaft 1 to i.
(3) Attach the leaf spring, and then attach the plate. Fix the
leaf spring and the plate by using the screw D.
Fig.12
Fig.13
D
Plate
Leaf spring
Part i
Shaft 1
Shaft 2 Part k
Part j

(No.XA014)1-17
SECTION 4
ADJUSTMENT
4.1 Test mode setting method
(1) Unplug the power plug.
(2) Insert power plug into outlet while pressing both "PLAY" key and "STOP" key of the main body.
(3) The FL display shows "∗0", and the main body turns to test mode. "∗" means the destination, and "0" means parameter adjust-
ment status.
(4) To release test mode, press "POWER" key of the main body.
NOTE:
Each pressing of "CHOICE" key of the remote controller in test mode changes the mode as follows.
4.2 Method of displaying version of firmware
(1) Set the main body at test mode.
(2) Press "CHOICE" key of the remote controller once. Then, version number and alphabetical letter of the system controller and
the back end are displayed in the FL display as follows:
4.3 Initialization method
Please initialize according to the following procedures in the following case:
• Just after you upgrade the firmware.
• After you confirm the symptoms that a customer points out. First Initialize, and then confirm whether the symptoms are improved or
not.
• After servicing, before returning the main body to a customer. (Initialized main body should be returned to a customer.)
(1) Set the main body at test mode.
(2) Press "PAUSE" key of the main body.
(3) When initialization is completed, the FL display changes from "∗0" to "∗00".(The left "0" of "00" is not always "0". It shows pa-
rameter adjustment status.)
Becames test mode
Version of firmware
Check mode
Not used
0 ------------------------------
_ ----------------------
FL Display becames all lighting
CK --------------------------------
EP -------------------------------
Back end
System controller
19_16
FL Display (Example)
213
5
8
4
7
6
9
010 +10
DISPLAY
3D PHONIC
ANGLE
TOP MENU MENU
CHOICE
PREVIOUS SELECT
CLEAR
NEXT
VFP ON SCREEN
ENTER
SUBTITLE AUDIO ZOOM
TITLE/
GROUP RETURN CANCEL
STANDBY/ON
SLOW
CHOICE key
(switch of mode)
POWER key STOP key
(for test mode)
PLAY key
(for test mode)
PAUSE key
(for initialize)
FL Display

1-18 (No.XA014)
4.4 All-initialization method
Please perform all-initialization according to the following procedures in the following case:
• Just after you exchange the pick-up.
• Just after you exchange the spindle motor.
• Just after you exchange the traverse mechanism base.
NOTE:
Please perform all-initialization when you exchange the parts above and also when you remove the parts above.
• Just after the flap adjustment of the pick-up guide shaft
(1) Set the main body at test mode.
(2) Press and hold "BACKWARD SKIP" key of the main body for more than 2 seconds.
(3) When all-initialization is completed, the FL display changes from "∗0" to "∗33".
NOTE:
After all-initialization, be sure to perform optimization adjustment of Front End parameter.
4.5 Optimization adjustment of Front End parameter
Adjustment to optimize Front End parameter must be performed in each mechanism assembly of this model for high-speed start-
ing.Please perform optimization according to the following procedures just after all-initialization is completed and when FL display
shows anything except "∗0" (For example when FL display shows "∗1", "∗2", and "∗3") at test mode.
(1) Press "POWER" key of the main body to turn the main body on (not to set the main body at test mode).
(2) Insert the test disc VT-501 or commercial dual-layer DVD software.
(3) Remove the disc when the FL display changes from "READ" to disc information.
(4) Perform the same procedures as in (2) and (3) above by using the test disc CTS-1000 or commercial CD-DA software.
(5) Set the main body at test mode, and check that the FL display shows "∗0".
NOTE:
Status of this adjustment can be judged by the number displayed at test mode as follows:
NOTE:
As for a disc used for adjustment,
• Disc should be mounted. ("Mounting" means to display "READ" after the disc is inserted and then display the disc informa-
tion.) Disc need not be played.
• If you do not have test disc either VT-501 (DVD) or CTS-1000 (CD-DA), use a commercial disc (for DVD, dual-layer soft-
ware) after seeing and checking that the disc is neither curved nor foreseen that it may shake at the time of playback.If you
use a disc with bad features, starting time may be slow or disc may not be read.
DVD adjustment CD adjustment FL display at test mode
Adjusted Adjusted ∗0
Not adjusted Adjusted ∗1
Adjusted Not adjusted ∗2
Not adjusted Not adjusted ∗3
213
5
8
4
7
6
9
010 +10
DISPLAY
3D PHONIC
ANGLE
TOP MENU MENU
CHOICE
PREVIOUS SELECT
CLEAR
NEXT
VFP ON SCREEN
ENTER
SUBTITLE AUDIO ZOOM
TITLE/
GROUP RETURN CANCEL
STANDBY/ON
SLOW
POWER key STOP key
(for test mode)
PLAY key
(for test mode)
BACKWARD SKIP key
(for All initialize : It pushes 2 seconds or more.)
FL Display

(No.XA014)1-19
4.6 Display of current value of laser
(1) Set the main body at test mode.
(2) Press "CHOICE" key of the remote controller three times. Then, FL display is displayed "CK".
(3) The laser current value can be switched between the value of CD and that of DVD by pressing the following key of the remote
controller.
The number shown in the FL display shows mA of current value of laser.The first two numbers ("25" in "2530") shows current
value of laser at the time of adjustment after the latest all-initialization, 25mA in this example.The last two numbers ("30" in
"2530") shows the present current value of laser, 30mA in this example.The first two numbers ("25" in "2530") usually shows
current value of laser at the time of shipment, so you can see how the product has been deteriorated by comparing the first two
numbers ("25" in "2530") and the last two numbers ("30" in "2530").
CD:
The laser current value of 65 mA or less is normal.
The laser current value of over 66 mA is not normal. Laser diode of the pickup has been deteriorated.
DVD:
The laser current value of 80 mA or less is normal.
The laser current value of over 81 mA is not normal. Laser diode of the pickup has been deteriorated.
To return to test mode, press "STOP" key of the main body.
4.7 Flap adjustment of the pick-up guide shaft
Please perform flap adjustment of the pick-up guide shaft in the following case:
• Just after you exchange the pick-up.
• Just after you exchange the spindle motor.
• Just after you exchange the traverse mechanism base.
NOTE:
Please perform flap adjustment of the pick-up guide shaft when you exchange the parts above and also when you remove the
parts above.
• When the reading accuracy of the signal is bad (There is a block noise in the screen, Screen stops in the outer circumference of a
disc, etc.)
2530
FL Display (Example) Remote controller "4" key --- Laser of CD
Remote controller "5" key --- Laser of DVD
213
5
8
4
7
6
9
010 +10
DISPLAY
3D PHONIC
ANGLE
TOP MENU MENU
CHOICE
PREVIOUS SELECT
CLEAR
NEXT
VFP ON SCREEN
ENTER
SUBTITLE AUDIO ZOOM
TITLE/
GROUP RETURN CANCEL
STANDBY/ON
SLOW
CHOICE key
(switch of mode)
POWER key STOP key
(for test mode)
PLAY key
(for test mode and jitter value)
FL Display
4 key (laser of CD)
5 key (laser of DVD)
6 key
(display of jitter value)

1-20 (No.XA014)
4.7.1 Tool for adjustment
*Stud: One set (four studs), Part number: JIGXVS40 (Note: One of the four studs is not used here.)
* Relay board and extension cord (One set) --- Parts number : EXTXVN30CB
*The phillips screwdriver for adjustment --- goods on the market
*Test disc ---- Parts number : VT-501
4.7.2 Preparation for adjustment
(1) A mechanism assembly is removed with reference to the disassembly method of a service manual.
(2) When the card wire which has connected the power supply board and the output terminal board is extracted at this time, please
connect again.
(3) Three stud is attached in a mechanism assembly, respectively.
(4) Remove the servo control board attached the mechanism assembly.
(If you disconnect the wires connected to the servo control board, connect them again.)
(5) The relay board 2 is connected to the connectors CN601 and CN701 on the output terminal board.
(6) The relay board 4 is connected to the connectors CN902 on the power supply board.
(7) The relay board 1 is connected to the connectors CN502 and CN503 on the servo control board.
(8) The relay board 3 is connected to the connectors CN501 on the servo control board.
(9) Between relay boards, an extension code is inserted, respectively and it connects.
(Be careful of direction of a card wire at this time.)
-- Items --
Relay board 1 : EXTXVN30CB-1
Relay board 2 : EXTXVN30CB-2
Relay board 3 : EXTXVN30CB-3
Relay board 4 : EXTXVN30CB-4
Card wire : 15 pins 15 cm 2 pcs
Card wire : 9 pins 15 cm 1 pcs
1
2
3
4
5
6
1
2
3
4
5 5 6
Relay board 2
Relay board 4
Relay board 3
Relay board 1
Stud
Stud
Output terminal
board
Power supply board
Servo control board
1
2
3
55
5566
4